Denso 4192 Spark Plug

Overview of Denso U-Groove Conventional Spark Plug 4192

The Denso U-Groove Conventional spark plug 4192 is engineered for reliable ignition performance in select Buick models. Designed specifically for Buick LeSabre and Skylark vehicles, this spark plug ensures consistent combustion and engine efficiency.

• U-groove ground electrode tip design for improved spark exposure
• Standard ground configuration with a single ground electrode
• Nickel ground electrode core and tip for durability
• Copper center electrode core with nickel tip for optimal conductivity
• Pre-gap size of 0.7 mm for precise spark gap
• Flat seat type with 14.00 mm thread diameter and 12.70 mm reach
• Hex size of 20.6 mm for standard installation tools
• Manufacturer heat range rating of 16
• Resistance value of 5000 ohms to reduce electrical noise

Details on the U-Groove Conventional Product Line

The U-Groove Conventional line from Denso features spark plugs with a unique U-groove ground electrode tip design. This design increases the spark exposure area, which can contribute to more efficient ignition and combustion. The conventional construction balances durability and performance, making it suitable for vehicles like the Buick LeSabre and Skylark that require reliable secondary ignition components.

Technical Description of Denso Spark Plug 4192

This spark plug incorporates a copper core center electrode with a nickel tip, providing effective heat dissipation and electrical conductivity. The single nickel ground electrode with a U-groove tip enhances spark exposure, which can improve ignition reliability. The flat seat design and 14 mm thread diameter ensure compatibility with specified Buick engines. The 0.7 mm pre-gap size is factory set to optimize spark performance, while the 5000 ohm resistance helps minimize radio frequency interference. The heat range of 16 is calibrated for the thermal requirements of the intended Buick models.

Compatible Buick Models and Common Applications

• Replacement spark plug for Buick LeSabre ignition systems
• Suitable for Buick Skylark secondary ignition needs
• Addresses issues such as misfires, rough idling, and poor fuel economy
• Helps resolve hard starting and engine hesitation

Installation Notes and Tips

• Ensure the spark plug gap is set to 0.7 mm before installation if adjustment is needed
• Use a 20.6 mm socket wrench for proper tightening torque
• Verify flat seat compatibility with the engine cylinder head
• Apply anti-seize compound sparingly on threads to prevent galling
• Follow manufacturer torque specifications to avoid damage

Quality Assurance and Warranty

Denso spark plugs, including part number 4192, are manufactured to meet OEM specifications for Buick vehicles. The materials and design undergo rigorous quality control to ensure consistent performance and durability. While specific warranty details depend on the point of purchase, Denso products typically come with a limited warranty covering defects in materials and workmanship.